Mastering, lacquer cutting and DMM engineer at Teldec-Studio, Berlin.

His lacquer cuts can be identified by CS-B-I, CS-B-II, CS-B-III, CS-B-VI (until 1981).
The B stands for Berlin and the roman numerals for the cutting room/lathe.
Please credit:
Lacquer Cut At - Teldec-Studio, Berlin
Lacquer Cut By - Christian Stegmaier with ANV CS

His DMM cuts (since 1982) can be identified by DMM CS-B-I, DMM CS-B-II, DMM CS-B-III, DMM CS-B-VI.
The B stands for Berlin and the roman numerals stand for the cutting room/lathe.
Please credit:
Mastered At - Teldec-Studio, Berlin
Direct Metal Mastering By - Christian Stegmaier + ANV CS
Note: when a record bears a DMM sticker and/or DMM remarks on the cover/labels but the runouts don’t, still add DMM credits.